Piston-valve oiler



Patented Nov. 22, 1927.

UNITED STATES PATENT@ OFFICE.

WALTER M. MILLER, OF CEDAR FALLS, IOWA.

PIs'roN-vALvE oILER.

Application led June 18,

My invention pertains to piston valve oilers, and the object of my improvement is to supply a device of this class with separable pumping devices within an oiler can, arranged to permit the withdrawal of the pump cylinder therefrom when desired.

Another object is to provide a convenient p and claimed, it being understood thatl changes in the precise embodiment of `in- Vvention herein disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings, Fig. 1 is a central vertical section of my improved device, and Fig. 2 is a similar y.section of a .modification thereof7 .being understood that similar numerals of reference denote similar parts throughout said views. Figs. 'and 4 are views'of opposite faces of the cylinder valve shown in Fig. 2.

My invention herein embodies improvements upon the device of my pending application for United States Patent, Serial Number 648,730, filed June 30, 1923.

Referring to Fig. 1, a can 1 has a flat looped handle 8 secured to the can by a projecting part inserted and fastened in a scrolled holder mounted at 7 on the upper'v Lincurved shoulder of the can.v This handle also has an incurved terminal part which serves as a finger rest, and the handle is positioned conveniently below the outwardly projectingpart-of a plunger stem 17 which is reciprocable through a bearing aperture in said shoulder, with its outer flattened terminal located for pressure ofV a finger or thumb ofthe operator. While the can 1 `may type, and have any useful shape or; dimensions, neck 2 to permit of removal therethrough of the cylinder part of the pumping mechanism to be hereinafter described. This neck be ofV any desired the one shown has a sufficiently wide.

1926. Serial No. 116,864.

may be shapedin any desired way, andas shown may be shaped with lan interior thread to receive a threaded closure or plug 3 made of metal with flat bottom plate, the latter as also the fiat top plate having central` alined apertures 5 to receive andv fit the lower end arty of the conically diminished hollow spout 6, the spout being free to turn'or slide longitudinally in said apertures. vA thin cupped elastic plate 4 is fastened on the vlower termination of said spout and before' insertion of the closure body 3, the lower end of the spout with the plate 4 is inserted in the neck against the inner rim of the can shoulder, and then the closure is screwed into place, which clamps the circular margin of the plate 4 sealingly between said rim and the closure bottom plate 3, the

"plate 4 furnishing an elastic joint permitting some yielding of the spout to knocks without breaking connection.

The pumping mechanism is positioned Within the can 1. It comprises an open end cylinder 9 apertured near its lower end to receive the lower end thereinto of a delivery tube 13,v the latter having its lower end beveled'at 14 in a plane crossing thecylinder at a right angle and projecting slightly into Vthe hollow of an annuiar termination 10 secured upon the lower end of the cylinder 9. The. termination 10 has an inner circular flange with a circular opening or port 11 0f less diameter than the inner diameter of said termination and spaced a little from the adjacent open end 14 of said' tube 13. In

said interspace is positioned a disk l2 to serve as a! loosely mounted valveto alternately control the port 11 andthe open tube end 14. vThe tube 13 is curved upwardly to substantially parallel the cylinder 9 and is then reversely curved upwardly to have its upper part extend up through the neck 2 and farther into the: lower end of the spout 6 when the spout and closure 3 are in place as shown in Fig. 1. InV this position the tube 13 spaced therefrom.

A strong coiled compression spring 15 isl fitted in the cylinder 9 lto stand supported against the entrant lower part ofthe tube 13. A solid plunger 16 is fitted slidingly. within the cylinder 9 resting upon the upper end of the spring 15 and when the spring is uncompressed the plunger lies a. distance below the upper end of the cylinder fora puris central withinV the 'spout and 'the plunger 16 and the stulling-box cover 19.

VIn Fig. 2 is illustrated a modification of my device. A. hollow metal plug 3a is used as a removable closure for the short downwardly flanged neck 21 of wide diameter. This closure has a conical central part 3b as a part of its bottom, closed by a plate 23 with packing 22, whose apex and the top plate of the closure and plate 23 are centrally apertured in line to loosely removably lit over a traversing delivery spout 13, which in this instance is merely a continuation up wardly above the can 1 of the delivery tube 13 shown in Fig. 1, the spout 6 being dispensed with. The mechanism of the pump is the same as that shown in said Fig. 1, except that instead of a flat disk valve 12 an inwardly cupped valve 12 is employed with annular' flange which coacts alternately with the iiange around the port opening 11l and the lower open end of the tube 13, so that both are never open at the same time.

The operator may operate the pump of the device by first closing the spout tip with a linger and then pushing in the stem 17 with its plunger 16, compressing the spring 15 in the cylinder 9, the plunger discharging most of the air from the cylinder by way of the tube 13, as the compressed air closes the valve 12 over the cylinder port 11. The stem 17 then being released, the spring 15 reacts lto thrust back the plunger 16 to its initial position, creating a partial vacuum in the cylinder' below the plunger which draws up the valve 12 to close the lower open end 14 of the tube 13 while opening the port 11. As the diameter of the valve 12 is less than the diameter of the hollow of the terminal body 10, although greater than the diameter of the port 11, an area of passage is afforded around the valve to permit the vacuum in the cylinder to draw from the interior of the can 1 liquid into the cylinder to lill it below the plunger 16. A renewed pressure upon the stem 17 again actuates the plunger 16 by thrusting it downwardly to force the liquid, such as oil, into the tube 13 and thence through the spout 6, closing the valve 12 over the port 11.

When it is desired to cleansethe can or the pumping mechanism, upon the removal of the closure 3 and the spout 6, the stem 17 may 'be partially withdrawn outwardly while compressing the light spring 18 until 'the plunger 16 is removed from the cylinder 9 and the plunger is then tilted enough to permit the cylinder to be swung over and the tube 13 moved upwardly through the wide neck 2 of the can together with the cylinder 9. The cylinder and tube 13 may be returnedv by reversing the operation, and the plunger 16 remounted in the cylinder, when the reacting spring 18 will keep the plunger below the top of the cylinder producing an upwardly opening cup at 24 which serves as an oil cup, as a small part of oil passes the plunger tov thus seal its inter-space with the cylinder.

In the modification of said Fig. 2, the operation is the same, and the removal or' the separated parts of the pump mechanism likewise is similar, after the removal of the plug closure 3a with the one piece tube and spout 13. The closure .device shown in Fig. 1 is preferred, as a non-leaking joint is supplied by the use of the thin elastic plate 4 as clamped in its seat by means of the threaded closure 3-3. 'After the oiler has been used, any oil which may have accumulated in the basal vpart ot the spout above theV cupped part or' the plate 4 may seep back into the can 1 through the loose joint between the spout and the plate 4, the can being upright.

The cupped valve 12 ot Fig. 2, as shown in Figs. 3 and 4, which respectively show the upper and lower faces thereof, hasan annular rim'12b resting upon theV valve-seat part 10', and a diminished downwardly directed cylindrical part or cup at 12d which at its upper end fits the seat opening when the valve is closed. lVhen the valve moves upwardly the diminished extensionpart at 12d cut away or flattened at 12C causes these' liattened parts 12c to .supply port spaces in the valve-seat to pass the oil into the cylinder. The lower open end 14 of the tube 13 then seats in the socket 12a, so that the tube is closed until down movement of the plunger 16 reseats the valve. The plunger has an oil sealing annular groove around it.

Having described my invention, what; I claim as new, and desire to secure by Letters Patent, is:

1. 1n combination, a liquid container having an open top, an apertured closure for said top, a delivery spout removablyV fitting said aperture in the closure, 'and a pumping device in said container, comprising a cylinder with valve-'controlled lower end and an open upper end, a delivery tube having one end in communication withsaid cylinder above said valve-controlled lower en d to be also controlled by said valve in alternations, and a resiliently controlled plunger in said cylinder said container having a bearing aperture, said plunger having a stem traversing said aperture, a yieldable 'resilient body between said plunger and contain-er tending to yieldingly resist removal of the plunger from the cylinder, the plunger when removed from the cylinder permitting said delivery tube to be removed through the open top of the container after removal of said closure and spout.

2. In combination, a liquid container having an open top, an apertured closure for said open top, a delivery spout removably fitting the aperture in the closure and having a relatively thin elastic diaphragm plate sealingly engaged between the closure and the container, and apumping device in said container adapted to deliver into the said delivery spout. Y

3. In combination, a` liquid container having an open neck with an interior thread and terminating at its lower end in an inwardly directed annular part, a threaded closure removably fitting said threaded neck to be seated on said annular part, said closure having a central aperture therethrough, a delivery spout loosely fitting and traversing said aperture and having on its lower end an annular plate clamped sealingly between said closure and said rimmed annulus, and a pumping device mounted in said container comprising separable parts, of which one part is removable from the container through said neck when open said pumping device having a delivery tub open lower end of said spout.

4. In combination, an open neck container, a closure for said open neck including a delivery spout traversing it, and having a bearing opening in its side wall, and a pumping device within said container having means 'For delivering the contents of the container into said spout, said device including a cylinder with valve-controlled port, and a plunger` f in and removable from the cylinder having a stem reciprocatingly traversing said side wall bearing opening non-removably, and springs engaging opposite ends of said plunger, one spring yieldingly retaining the plunger in the cylinder ata position spaced from one end thereof, whereby upon coinpression of the latter spring the plunger may be withdawn from thecylinder to permit removal of the cylinder through the opened neck of the container.

e delivering into the n 5. In combination, a can with a relatively wide neck, a spout removably seated in and having an apertured closure connection for said neck, a valvular pump cylinder positioned in the can having an open upper end and having a discharge tube leading from its lower part through and to removably iit the aperture in said neck closure, an impert'orate plunger slidable in said cylinder, said can having a bearing aperture and a stuiiingbox therefor within the can in line with said cylinder, said plunger having a stem projecting through said stuffing-box and aperture outwardly, a relatively strong compression spring within the cylinder supporting, when untensioned, said plunger at a distance below the upper endl of the cylinder so that the end of the cylinder above the plunger may serve as ay liquid receptacle to seal the interspace of the plunger and cylinder against air leakage, and a wea-kerc'ompression spring mounted onsaid stem and engaged between the plunger and stuiiing-box to yieldingly retain the plunger in the cylinder, yet to yield when the stem is pulled outl wa-rdly to permit separation of the cylinder from the plunger.

6. In combination, a liquid container having a circular openn'eck and also having a separated bearing opening in the upper part of its side wall, a spout removably secured in said open neck, a. pumping cylinder within the container and notdirectly connected thereto, said cylinder having a deliveryy conduit inserted into said spout loosely, anda removableV piston reciprocable in the upper part of said cylinder and having a stem passing through said separated bearing opening in the side wall of the container and not disconnectible from the container, said stem capable of being moved outwardly sufficiently far to withdraw said piston from the upper open end of said cylinder to leave the cylinder loose in the container and with kits said conduit together removable through said open neck. n

In testimony whereof I affix my signature.

WALTER M. MILLER. 

